Compatibility: Designed to fit Stihl BR500, BR550, and BR600 backpack blowers Replacement Part Numbers: Replaces OEM parts 150-811, 4282 190 0300, and 4282 190 0300A Premium Quality: Constructed from high-quality plastic for durability, stability, and long-lasting performance. Easy to install and operate The recoil starter engages the crankshaft when the rope is pulled, making engine starting easy and efficient Package Includes: 1 × 150-811 recoil pull starter Recoil Starter Assembly for Stihl Backpack Blower BR500 BR550 BR600 Pull Start, Replaces 4282 190 0300